Liquid-fuel-feeding device for internal-combustion engines



0. SCHULZE. 1

Jan. 30; 1923.

LIQUID FUEL FEEDING DEIIICE FOR INTERNAL COMBUSTION ENGINES.

FILED FEB- 18, I921.

Patented Jan. 36, I923.

wires are earner carer-c nane OTTO SCI-IULZE, OF BADEl l-BADEN, GERMANY.

Application filed l eluraary 18, 1921.

To 11/! w/merit may concern:

Be it neer, a citizen of the German Republic, re-

Baden, new and useful Improvements in Liquidl ueld eeding Devices for Internal-Combustion Engines, of which the following is a specification.

This invention relates to an improved controlling device for siphons, in which the closing member for the air draw-01f nozzle is carried by the guiding-rod of a floatvalve and forms an armature for an electromagnet, whereby the reversing action of the float of said float-valve in its upper end position is facilitated while said closing member is kept in its closing position until it is disengaged therefrom by said float returningto its lowermost end position.

The accompanying drawing shows in Figs. 1 and 2 respectively a central vertical section, and a diagrammatical cross section through the improved siphon.

A float-chamber l, which is closed toward the atmosphere. carries in its, cover the air draw-off nozzle 2. which is embraced by the poles of an electro-magnet 3 in such a way that the nozzle orifice lies in one plane with the lower horizontal pole surfaces. The magnet armature 4 is fixed on the upper end of an intermediary member (tube) 5. Said member is guided on a rod 6 fixed to the bottom of thechamber 1. The float 7 is slidable on said member 5. its up and down movement being'limited in upward direction by said armature 4 and in downward direction by a flange 8 on the lower end of said member 5. To the cover of the chamber 1. further. an outer-air-valve 9, and pipe connections 10 and 11 for suckingoff the air and sucking-in the'liquid respectively. are attached. At the lower part of he chamber 1 an outlet valve 12 with a valvedisc freely moving on. its seat, is provided. A collector (not shown) for the liquid raised is supposed to be located beueath said outlet valve 12.

The operation is as follows In its inoperative position, the float 7 hears upon the flange 8 of the member 5, while the latter bears upon the upper end 7 of the guiding rod 6. The float assumes then its lowermost position, while the valves 9 and 12 are closed and the nozzle-orifice 2 is open. Upon air being sucked off from known that l, O'r'ro SOHULZE, engito siding at Baden-Bademin the State of in Germany, have invented certaln' Serial No; 446,204.

1 through the pipe 10, the liquid be raised ascends through the pipe 11 and enters the chamber 1. the float]? time, the member 5 with the'mag'net armature it until the latter is attracted by the poles-3. Thereby, the nozzle orifice2 is covered and closed. outer-air valve 9 is ture. 'The outer air the chamber opened by said armais thus admitted to the chamber 1, so that the liquid raised can flow-olf through the outlet valve 12 into the collector underneatlu The attractive power of the magnet 3 is so determined that the same safely carries the armature with the member 5. ever, increased by the weight of the float, which descends with the fall of the liquid level until it bears again upon the flange S, the ZII'll'lELtllIe is pulled down from the magnet 3 and thus again liberates the air draw-01f nozzle 2, while at the same time the outer-air valve 9 is again closed. The proceeding begins then afresh as aforc-described.

Pihat I claim, is

1. A. siphoning apparatus comprising a liquid chamber having at the upper end thereof an air outlet orifice and pipe connection for drawing air therefrom and a pipe connection through which liquid may enter said chamber, and also an air inlet valve, and at its lower end a valve-controlled outlet for liquid,- said chamber having enclosed therein a float slidably supported on a vertically slidable member having a magnet-armature mounted thereon, and a magnet above said armature; said verticallysliding member being mounted on a fixed member within said chamber and adapted to be raised and lowered alternately by said float and in ascending to move said armature into operative relation with said magnet and thereby close said orifice and open. said air inlet valve. and on its descending movementto release said armature and thereby open said orifice and permit said air inlet valve to close. p

2. In asiphon for liquids, in'comloination. a float-chamber. an outer-air valve, an air draw-off nozzle, and a suction pipe for the liquid to be raised, all attached to the cover of said chamber. a magnet embracing said air draw-ofl' nozzle in such away that the orifice of the same lies in one plane with the lower pole surfaces of said magnet, an

Consequently,' rises and lifts, after a certain At the same time, the

Upon said load being, howoutlet valve having a valve-disc freely moving on its seat attached to the lower end of said chamber, a guiding-rod fixed on the bottom of said chamber, an intermediary member guided on said rod and adapted to bear upon the upper end of the same, a flange on the lower end of said member, a float slidably located on said member and adapted to bear upon the flange thereon, and an armature fixed to the upper end of said member and adapted to be lifted with said member by an ascent of said float and to be attracted by said magnet thereby clos- OTTO SGHULZE.

WVitnesses KARL WVEN'rzEL, Gnome I'IAQUMER. 

